Draw9patch tool, what for i should use red border, marked by pressing ctrl

Question

In official documentation i didn't find answer. I can set border of image that indicates areas which will be stretched, but when i press ctrl key, color of border became red, and i don't understand what for it is. It looks like
enter image description here

score 0 · Answer 1 · edited May 23 '17 at 10:32

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Take a look at this thread and there's some discussion about it:

Android 9 Patch tool: What is the new layout bounds feature?

Something about layout bounds that are not used by the Framework.

I've used 9-patch images plenty but honestly never noticed these before. Interesting!

edited May 23 '17 at 10:32

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answered Oct 02 '13 at 14:09

SBerg413

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score 0 · Accepted Answer · edited May 23 '17 at 12:18

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This might be helpful: https://stackoverflow.com/a/11854891/1234007

Btw, this red is documented in 4.3 documentation as optical bound. Read about it here http://developer.android.com/about/versions/android-4.3.html#Graphics

edited May 23 '17 at 12:18

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answered Oct 02 '13 at 14:12

Aman Gautam

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score 0 · Answer 3 · edited May 23 '17 at 12:18

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For more references about a bug introduced with gradle 0.9.1, please see my answer: https://stackoverflow.com/a/22580228/1345391

edited May 23 '17 at 12:18

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answered Mar 22 '14 at 16:19

JavierSP1209

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Draw9patch tool, what for i should use red border, marked by pressing ctrl

3 Answers3